mrt添加路由器不工作

我只是阅读“DiscoverMeteor”书，但路由capter mrt add router中指定的命令显示我的一些错误

mrt添加路由器

 smart.json changed.. installing from smart.json ✓ router tag: https://github.com/tmeasday/meteor-router.git#v0.5.4.1 ✓ page-js-ie-support tag: https://github.com/tmeasday/meteor-page-js-ie-support.git#v1.3.5 ✓ HTML5-History-API tag: https://github.com/tmeasday/meteor-HTML5-History-API.git#v4.0.0 Done installing smart packages Stand back while Meteorite does its thing Done installing smart packages Ok, everything's ready. Here comes Meteor! router: updating npm dependencies -- connect... => Errors while scanning packages: While building package router: error: Can't install npm dependencies. Are you connected to the internet? 

所有其他的例子，路由章节工作完美目前我使用的Ubuntu 12.04

我如何安装路由器？ 请帮助我